cat={"type":"猫科" ,"z's_name":"zhang", }
hashiq={"type":"狗科", "z's_name":"san", }
xiaotian={"type":"狗科", "z's_name":"erlang",}

pets=[cat, hashiq, xiaotian, ]

for valuee in pets :
    for i,s in valuee.items() :
        print(i,end=":")
        print(s)